What it is
Impaired ability to maintain upright posture and equilibrium when standing, walking, or changing position.
Impaired ability to maintain upright posture and equilibrium when standing, walking, or changing position.

At a glance
What it is
Impaired ability to maintain upright posture and equilibrium when standing, walking, or changing position.
Commonly experienced as
Evidence context
Research-supportedSee the evidence snapshotContext
Loss of balance describes difficulty maintaining stable, upright posture — producing unsteadiness, tendency to fall or sway, or the need to hold onto surfaces for support. The balance system integrates three inputs: vestibular (inner ear), visual, and proprioceptive (joint position sense). Disruption of any of these produces imbalance. Vestibular causes include benign paroxysmal positional vertigo (BPPV — repositionable crystals in the semicircular canals, highly treatable), labyrinthitis, Ménière's disease, and vestibular neuritis. Central causes include cerebellar or brainstem dysfunction from stroke, MS, or cerebellar degeneration. Peripheral neuropathy impairs proprioceptive input. In older adults, multifactorial balance impairment from age-related sensory decline, medication side effects, and reduced muscle strength is the most common cause, and fall prevention is a major clinical priority.
The Evidence
What research says about balance impairment, its causes, and the approaches with the strongest support.
Balance impairment is well-studied with effective, targeted interventions
The causes of balance loss are well understood across vestibular, neurological, and multifactorial pathways. Several interventions — including specific repositioning manoeuvres and structured balance training — have strong clinical evidence behind them.
Sudden onset weakness, numbness, or difficulty speaking alongside balance loss may indicate stroke — seek emergency care immediately. A severe headache described as the worst ever experienced, seizures, loss of consciousness, or vision changes with other neurological symptoms also require urgent professional assessment without delay.
The Epley manoeuvre for BPPV has very strong evidence and is considered a first-line approach. Vestibular rehabilitation programmes also have strong research support for improving function after vestibular disruption. Structured balance and strength training has strong evidence for reducing fall risk, particularly in older adults.
The body maintains balance by combining signals from the inner ear (vestibular), eyes (visual), and joints (proprioceptive). Common vestibular causes include BPPV, labyrinthitis, and Ménière's disease. Central causes such as cerebellar or brainstem conditions require specialist assessment. In older adults, balance impairment is often multifactorial and fall prevention is a key clinical priority.
Vestibular physiotherapy, balance retraining, and targeted exercise programmes are commonly recommended. Complementary approaches such as tai chi have emerging evidence for improving balance and reducing falls in older adults. The most appropriate approach depends on the underlying cause, which professional assessment can help clarify.
A GP, neurologist, or ear, nose and throat specialist can help identify the underlying cause. Vestibular physiotherapists are trained in specific assessment and rehabilitation techniques. If balance loss is affecting daily function, increasing fall risk, or accompanied by other symptoms, professional assessment is an important first step — not a substitute for self-management, but essential alongside it.
Balance impairment has many possible causes, some of which require clinical investigation to identify safely. This content is intended to support awareness and informed decision-making, not to replace professional evaluation. If you are unsure about the cause of your balance difficulties, seeking qualified assessment is the appropriate next step.
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